Distributor head for pipe coating apparatus



ATTORNEY y w v I WI I IRUMJHHH PEM. m mP ww mm m JR H u Nov. 11, 1941- A. G. PERKINS DISTRIBUTOR HEAD FOR PIPE COATING APPARATUS Filed May 13, 1940 W h a w b, A) w m l Patented Nov. 11, 1941- UNITED STATES PATENT OFFICE" aztam Albert a. PM Warsaw, N. r.

- amass-l May 1:, mo, Serial No. 3:4,:11

acla i ma.

This invention relates generally to an 'appara-' tus for applying a protective coating or lining to the inner walls of conduits or pipe lines, but more particularly to a novel applicator or distributor head therefor.

It, has for one of its objects to provide a distributor head of this character which is so designed and constructed as to permit the ready replacement or renewal of those parts of the head which receive the maximum of wear due to the impact of the mortar-like coating material impinging against the same, without necessarily renewing the head as a unit, thereby effecting a material savingin the maintenance cost of such equipment.

Figure 1 is a side elevation of a pipe coating apparatus showing my improved distributor head associated therewith. Figure 2 is an enlarged central longitudinal section of the distributor head showing the sectional blade structure. Figure 3 is a front elevational view, partly in section, of the distributor head. Figure 4 is a fragmentary perspective view of one of the blade-attaching plates. Figure 5 is a fragmentary perspective view of the guide ring in which one end of the renewable blade-sections are seated. Figure 6 is a perspective view of one of the wear plates. Figure '7 is a fragmentary perspective view of the through the pipe line to be treated and on which is mounted a hopper or container l I for the coating material having a conduit or feed pipe I! connected therewith, there being a screw conveyor l3 employed for conveying the material from the hopper through and to the discharge end of its connecting feed pipe. At its discharge end, which is the rear end of the machine, the

feed pipe is provided with an annular row of discharge ports l4 and disposed for registration with these ports and for rotation about the axis of the feed pipe 12, is the improved distributor head which functions to apply the coating material by centrifugal force and into a densely compacted mass onto the pipe wall. Rearwardly of the distributor is a rotatable trowel unit [5 which serves to smooth out the coating material after it is applied to the pipe wall by the dis tributor head.

The improved distributor head has been so designed that the parts thereof which receive maximum wear from contact with the concrete other blade-attaching plate. Figure 8 is a fragmentary sectional view of a slightly modified form of wear plate.

Similar characters. of reference indicate corresponding parts throughout the several views.

While my improved distributor head is capable of use with various types of apparatus, it has been designed primarily for use with an apparatus for applying a protective coating or lining of concrete mortar or'the like to the inner walls of steel pipe lines or conduits. By way of example, my invention has been shown with a pipe coating apparatus or machine of the type shown in Figure 1 of the drawing, the numeral ll indicating mortar or like plastic coating material may be readily replaced and renewed when desired in a minimum period of time. In its preferred construction, this distributor head is constructed as follows:

The numeral It indicates a rotor which may be in the form of a sleeve suitably journaled about the ported end of the conduit l2 and rotatable at a comparatively high speed in any appropriate manner, as by a driving connection l1 with an electric motor I8 mounted on the carriage In, as shown by dotted lines in Figure 1. Bolted or otherwise secured to a flange l9 formed at the outer end of the rotor-sleeve It is a blade-attaching ring or plate 20, between which and an axially-spaced sectional attaching ring 2|, 22'are a plurality of radial distributorvblades or vanes 23. In its inner face the ring 20 is provided with a plurality of radial grooves or seats 24 which extend from the periphery of the ring to a point short of the inner edge thereof, while the companion ring-section 2| is provided with like grooves or seats 25 into which the corresponding ends of the blades 23 are seated. For the purpose of securing these blades firmly in place between blade may be secured to the ring-section 2| by screws 28. As shown in Figure 2, the outer edges of the blades 23 are serrated or notched for the a I a carriage which is adapted to' be propelled purpose of eflectingabreaking'up of the material as it centrifugally leaves the blades to thereby eifect a-smoother and denser application ofthe coating material onto the-pipe wall. The inner edges of the blades preferably terminate short of the inner ends of the companion radial grooves A section 22. In this connection the ring 20 is provided adjacent its inner edge with an annular groove or channel 3| in which a floating ring 32 is fitted, the latter being provided with a plurality of radial grooves 33 spaced for registration with the companion grooves 24 of the attaching ring 20. The ring-section 22 is provided on its inner face and adjacent its inner edge with a plurality of grooves 34 which are adapted to register with and constitute continuations of the companion grooves 25 formed in the ring section 2i. The opposite ends of the wear plates 30 are detachably seated in the respective grooves of the companion rings 20, 2!, 22 and 32, in the manner shown in Figure 2, so as to be alined radially in the plane of the companion distributor blades 23 as shown at the right hand side of Figure 3.

The inner peripheral edges of the head-rings 20, 22 and the inner edges of the wear plates 30 terminate short of the outer wall of the ported conduit l2, whereby to provide a clearance or re-.

- portion of the space between the head plates,-

while the adjoining portions of the wear plates 30 may be beveled or chamfered as indicated at 36. These wear plates are preferably hardened along their inner edges so as to'better withstand the impact of the mortar as it issues from the ported conduit l2 into the distributor head.

By mounting the distributor blades in the manner heretofore described, theyare smooth-faced throughout and the objection of any obstructions or protuberances on the blades to interfere with the free centrifugal flow of the material between the blades is eliminated. Furthermore, the provision of the detachable wear plates 30, which constitute inner continuations of the main distributor blades 23, receive the most wear and protect the main blades and may be readily replaced when desired with new ones by merely removing the screws 29 to separate the ringsection 22 from its companion ring-section 2|, whereupon the wear plates can be readily re- .moved and as readily replaced with new ones,

after which the ring section 22 is replaced. I

In Figure 8, I have shown a slightly modified secured I claim as my invention:

1. In a distributor head of the character described, a revolvable body having a plurality of distributor blades disposed substantially radially about the axis thereof, said blades including portions alined with and separable therefrom, and means for detachably securing the separable portions of the blades to said body.

2. In a distributor head of the character described, a revolvable body having a plurality of distributor blades disposed substantially radially about the axis thereof, each of said blades including a main section and a replaceable wear plate section disposed in edgewise abutting relation to its companion main section, and means for detachably securing said wear plate sections as a unit to said body.

3. In a distributor head of the character described, a revolvable body having a plurality of distributor blades disposed substantially radially about the axis thereof, each .of said blades including a main section and a replaceable wear plate section disposed in edgewise abutting relation to its companion main section, and means applied to said body including notched members form of distributor blade in which its body 31 may be made of steel or like material, while its 1 inner edge is provided with a wear tip 33 of rubher which may be vulcanized or otherwise 7 thereto.

for receiving the ends of said wear plate sections for universally detachably securing the latter to said body.

4. In a distributor head of the character described, a pair of spaced head-rings having substantially. radial blades disposed therebetween, and wear plates detachably mounted between said rings in edgewise abutting relation to said blades and constituting continuations thereof.

5. In a distributor head of the character dewear plates detachably mounted between saidrings in edgewise abutting relation to said blades and constituting continuations thereof, and means applied to said head-rings and releasably engageable with the opposite ends of said wear plates for detachably retaining them against endwise and radial displacement relative to said blades.

7. In a distributor head of the character described, a pair of spaced head-rings having substantially radial blades disposed therebetween,

wear plates detachably mounted between said rings in edgewise abutting relation to said blades and constituting continuations thereof, one of said head-rings including a radially-notched secti'on in whichone end of the wear plates are removably seated against displacement relative to said blades, and a detachable clamping member applied to the companion head-ring and having a radially-notched section in which the opposite ends of the wear plates are seated.

8. In a distributor head of the characterdescribed, a-pair of spaced head-rings having substantially radial blades disposed therebetween, wear plates detachably mounted between said rings in edgewise abutting relation to said blades and constituting continuations thereof, one of said head-rings being provided in its inner face and radially inward of the inner edges of said blades with an annular groove, a wear-plateengaging member fitted in said groove and having radial notches therein adapted for registering radial relation with said blades and with which one end of said wear plates are removably seated, and a detachable clamping member applied to the companion head-ring and having radial notches therein in which the opposite ends of said wear plates are seated.

9. In a distributor head 01 the character described, a pair of spaced head-rings having radial grooves on the opposing inner races thereof. one of said head-rings including a detachable ring-like section having radial grooves on its inner lace adapted for registering alinement with the grooves of the companion head-ring, and i0 distributor blades disposed between said headrings and seated in said grooveaeach 01' said blades including a renewable wear section having one end thereof removably seated in a corresponding groove in one of the head-rings and its opposite end removably seated in acorrespo'nding groove in the detachable 'sectiono! the companion head-ring.

ALBERT G. PERKINS. 

